Vent for septic system



FIG. 1 is a side elevational view of a vent for septic system according to the invention, all sides each having a similar appearance, including a filter retainer and foliage ornamentation illustrated with broken lines showing an environment for the claimed design for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is an exploded side, bottom perspective view thereof;

FIG. 3 is a cross sectional detail view of thereof, including a portion of a septic system gas vent pipe and landscape illustrated with broken lines showing an environment for the claimed design for illustrative purposes only and forming no part of the claimed design;

FIG. 4 is an exploded view thereof;

FIG. 5 is a cross sectional detail view of another embodiment of a vent for septic system according to the invention, all sides each having a similar appearance, including a filter retainer illustrated with broken lines showing an environment for the claimed design for illustrative purposes only and forming no part of the claimed design;

FIG. 6 is an exploded view thereof;

FIG. 7 is an exploded side, bottom perspective view thereof; and,

FIG. 8 is a side elevational view thereof. 

The ornamental design for a vent for septic system, as shown and described. 